Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Leonard Berman, Juris Hartmanis. On Isomorphisms and Density of NP and Other Complete Sets. SIAM Journal on Computing, 6(2):305-322, 1977.
Abstract is missing.